Chrysanthemum plant named ‘Mona Lisa Yellow’

ABSTRACT

A new and distinct cultivar of  Chrysanthemum  plant named ‘Mona Lisa Yellow’, characterized by its decorative anemone-type inflorescences with elliptic-shaped, light yellow-colored ray florets and darker yellow-colored enlarged disc florets; strong and upright flowering stems; freely flowering habit; early and uniform flowering response; and good postproduction longevity.

Botanical designation: Chrysanthemum×morifolium.

Cultivar denomination: ‘Mona Lisa Yellow’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar ofChrysanthemum plant, botanically known as Chrysanthemum×morifolium,commercially grown as a cut flower and hereinafter referred to by thename ‘Mona Lisa Yellow’.

The new Chrysanthemum is a naturally-occurring whole plant mutation ofthe Chrysanthemum×morifolium cultivar Mona Lisa Cream, disclosed in U.S.Plant patent application Ser. No. 11/267,907. The new Chrysanthemum wasdiscovered and selected by the Inventor as a single flowering plantwithin a population of plants of the cultivar in May, 2004, inHensbroek, The Netherlands. The selection of this plant was based on itsattractive ray floret color and good inflorescence form.

Asexual reproduction of the new Chrysanthemum by terminal cuttings in acontrolled environment in Hensbroek, The Netherlands since July, 2004,has shown that the unique features of this new Chrysanthemum are stableand reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

Plants of the cultivar ‘Mona Lisa Yellow’ have not been observed underall possible environmental conditions. The phenotype may vary somewhatwith variations in environment such as temperature, daylength and lightintensity, without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined tobe the unique characteristics of ‘Mona Lisa Yellow’. Thesecharacteristics in combination distinguish ‘Mona Lisa Yellow’ as a newand distinct cultivar of Chrysanthemum:

-   -   1. Decorative anemone-type inflorescences with elliptic-shaped,        light yellow-colored ray florets and darker yellow-colored        enlarged disc florets; typically grown as a spray-type.    -   2. Strong and upright flowering stems.    -   3. Freely flowering habit.    -   4. Early and uniform flowering response; plants flower about        seven weeks after the start of photoinductive treatments.    -   5. Good postproduction longevity; plants maintain good substance        for about three weeks in an interior environment.

Plants of the new Chrysanthemum differ from plants of the parent, thecultivar Mona Lisa Cream, in the following characteristics:

-   -   1. Plants of the new Chrysanthemum have slightly darker        green-colored leaves than plants of the cultivar Mona Lisa        Cream.    -   2. Plants of the new Chrysanthemum are not as freely flowering        as plants of the cultivar Mona Lisa Cream.    -   3. Plants of the new Chrysanthemum and the cultivar Mona Lisa        Cream differ in ray floret color as plants of the cultivar Mona        Lisa Cream have white-colored ray florets.

Plants of the new Chrysanthemum can be compared to plants of theChrysanthemum cultivar Dekdakar, disclosed in U.S. Plant Pat. No.16,009. In side-by-side comparisons conducted in Hensbroek, TheNetherlands, plants of the new Chrysanthemum differed from plants of thecultivar Dekdakar in the following characteristics:

-   -   1. Plants of the new Chrysanthemum were stronger than plants of        the cultivar Dekdakar.    -   2. Plants of the new Chrysanthemum had larger leaves than plants        of the cultivar Dekdakar.    -   3. Plants of the new Chrysanthemum had larger inflorescences        than plants of the cultivar Dekdakar.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying colored photographs illustrate the overall appearanceof the new Chrysanthemum. These photographs show the colors as true asit is reasonably possible to obtain in colored reproductions of thistype. Colors in the photographs may differ slightly from the colorvalues cited in the detailed botanical description which accuratelydescribe the colors of the new Chrysanthemum.

The photograph at the top of the sheet comprises a side perspective viewof a typical flowering stem of ‘Mona Lisa Yellow’ grown as a naturalspray.

The photograph at the bottom of the sheet is a close-up view of atypical flowering stem of ‘Mona Lisa Yellow’.

DETAILED BOTANICAL DESCRIPTION

In the following description, color references are made to The RoyalHorticultural Society Colour Chart, 2001 Edition, except where generalterms of ordinary dictionary significance are used. The aforementionedphotographs and following observations and measurements describe plantsgrown during the winter in Hensbroek, The Netherlands, under commercialpractice in a glass-covered greenhouse. Plants were initially given longday/short night treatments followed by short day/long night treatmentsto induce flower initiation and development. During the production ofthe plants, day temperatures ranged from 17.5° C. to 30° C., nighttemperatures ranged from 18.5° C. to 24° C. and light levels were aboutfive kilolux. Plants were pinched once and were about eleven weeks fromplanting when the photographs and the description were taken.

-   Botanical classification: Chrysanthemum×morifolium cultivar ‘Mona    Lisa Yellow’.-   Parentage: Naturally-occurring whole plant mutation of the    Chrysanthemum×morifolium cultivar Mona Lisa Cream, disclosed in U.S.    Plant patent application Ser. No. 11/267,907.-   Propagation:    -   -   Type.—Terminal vegetative cuttings.        -   Time to initiate roots.—About six to seven days with            temperatures about 20° C.        -   Time to produce a rooted young plant.—About 14 to 16 days            with temperatures about 20° C.        -   Root description/habit.—Fine; light brown in color; freely            branching.-   Plant description:    -   -   Appearance.—Herbaceous decorative anemone-type cut flower            that is typically grown as a natural spray.        -   Flowering stem description.—Aspect: Erect. Length: About            75 cm. Diameter: About 6 mm. Texture: Pubescent;            longitudinally ridged. Color: 146A.        -   Foliage description.—Arrangement: Alternate; simple. Length:            About 8 cm to 13 cm. Width: About 5 cm to 7.5 cm. Apex:            Apiculate. Base: Attenuate. Margin: Palmately lobed.            Texture, upper and lower surfaces: Pubescent, rough; veins            prominent on lower surface. Color: Developing and fully            expanded foliage, upper surface: Close to 147A; venation,            close to 147B. Developing and fully expanded foliage, lower            surface: Close to 147B; venation, close to 147B to 147C.            Petiole: Length: About 5 mm to 20 mm. Diameter: About 3 mm.            Texture, upper and lower surfaces: Pubescent. Color, upper            and lower surfaces: Close to 147B.-   Inflorescence description:    -   -   Appearance.—Decorative anemone-type inflorescence form with            elliptic-shaped ray florets and enlarged disc florets.            Inflorescences borne on terminals, arising from leaf axils.            Ray and disc florets develop acropetally on a capitulum.            Inflorescences not fragrant.        -   Flowering response.—Under natural conditions, plants flower            in the autumn/winter in the Northern Hemisphere. At other            times of the year, inflorescence initiation and development            can be induced under short day/long night conditions (at            least 13.5 hours of darkness). Early and uniform flowering            response; plants exposed to two weeks of long day/short            night conditions after planting followed by photoinductive            short day/long night conditions flower about seven weeks            later when grown as a natural spray.        -   Postproduction longevity.—In an interior environment,            inflorescences and foliage will maintain good color and            substance for about three weeks.        -   Quantity of inflorescences.—Freely flowering habit, about 20            inflorescences per flowering stem develop.        -   Spray width.—About 15 cm.        -   Inflorescence size.—Diameter: About 6 cm to 7 cm. Depth            (height): About 2 cm. Disc diameter: About 2 cm.        -   Inflorescence buds.—Shape: Oblate. Height: About 5 mm.            Diameter: About 8 mm to 10 mm. Color: Close to 137B.        -   Ray florets.—Length: About 2 cm to 3.5 cm. Width: About 9 mm            to 14 mm. Shape: Elliptic. Aspect: Concave. Apex: Broadly            acuminate. Base: Attenuate. Margin: Entire. Texture: Smooth,            glabrous; longitudinally ridged. Number of ray florets per            inflorescence: About 45 arranged in numerous rows. Color:            When opening, upper surface: Close to 2D. When opening,            lower surface: Close to 4D. Fully opened, upper surface:            Close to 4C. Fully opened, lower surface: Close to 2D.        -   Disc florets.—Shape: Tubular, enlarged. Length: About 6 mm            to 18 mm. Diameter: About 1 mm to 4 mm. Number of disc            florets per inflorescence: About 100. Color: Immature: Close            to 145B. Mature: Towards the apex, close to 5A; mid-section,            close to 4B; towards the base, close to 145C to 145D.        -   Phyllaries.—Shape: Deltoid. Apex: Acute. Base: Truncate.            Margin: Entire. Texture, upper surface: Smooth, glabrous.            Texture, lower surface: Slightly pubescent. Color, upper            surface: Close to 146A. Color, lower surface: Close to 147A            to 147B.        -   Peduncles.—Length, first peduncle: About 4 cm. Length,            fourth peduncle: About 8 cm. Diameter: About 2 mm to 3 mm.            Angle: About 45° from vertical. Strength: Strong. Texture:            Pubescent; longitudinally ridged. Color: Close to 137C.        -   Reproductive organs.—Androecium: Not observed. Gynoecium:            Present on both ray and disc florets. Stigma length: About            5 mm. Stigma width: About 3 mm. Stigma shape: Bi-parted.            Stigma color: Close to 145B; towards the apex, close to 7A.        -   Seed/fruit.—Seed and fruit production has not been observed.-   Disease/pest resistance: Resistance to pathogens and pests common to    Chrysanthemums has not been observed on plants grown under    commercial conditions.

1. A new and distinct Chrysanthemum plant named ‘Mona Lisa Yellow’ asillustrated and described.